Means for uniting textile strands.



E.'J. LIPPS. YMEANS FOR UNITING TEXTILE STRANDS.

APPLICATION FILED MAR- a. 1917.

1,802,187w Patented Apr. 29, 1919.

2 SHEETS-SHEET 1- i h M s,

E. J LIPPS. MEANS FOR UNITING TEXTILE STRANDS.-

APPLICATION FILED MAR- 3. 1917.

Patented Apr. 29,1919.

2 $HEETS-SHEET 2- 0 m n T N mm m WL MM T T T mm EL WITNESS MEANS FOR UNITING- TEXTILE STRANDS.

Specification of Letters Patent.

Patented Apr. 29, 11919.

Application filed March 3, 1917. Serial No, 152,220.

To all whom it may concern:

Be it known that I, EMORY J. Lrrrs, a

citizen of the United States, residing in borough of Fountain Hill, in the county of Lehigh, and State of Pennsylvania, have invented certain new and useful Improvements in Means for Uniting Textile Strands, of which the following is a specification. This invention relates to the art of uniting textile or other strands with each other by wrapping them around each other while they are being advanced, as in doubling, for instance. The apparatus herein set forth has been devised especially for use in effecting the preliminary twisting of threads or strands explained in Letters Patent No. 1,206,556 granted to Lloyd H. Lipps and myself November 28th, 1916; but it is not limited in its application to that use. Instead of causing the wrapping or twisting by rolling the strands around each other over a suitable surface, as explained by way of example in said Letters Patent, they are in the present case, while being drawn lengthwise by one means subject to the resistance of another, swung around a common axis by a twister arranged between said means and having means to receive the strands and confine them to a definite relation to each other disposed eccentrically of its axis of rotation. The twister is preferably rotated back and forth, so that the twist or wrap put in the strands shall be alternately right and left. The twister is adapted, further, in the preferred form of the invention and for a reason to be explained, to receive both or all of the strands being operated upon in the same guiding opening, which preferably is shaped otherwise than round for a reason to be set forth.

In the accompanying drawing,

Figure 1 is a transverse vertical sectional view of a doubling machine provided with means for producing the twisting or wrapping according to this invention;

Fig. 2 is a front elevation of the more pertinent parts shown in Fig. 1;

Fig. 3 is a plan of what is shown in Fig. 2;

Fig. 4 is a plan of the twister and its supporting arm;

. Fig. 5 is a side elevation thereof, partly in section;

Fig. 6 is a plan of the plate portion 2" of the arm;

Fig. 7 is a plan of the twister; and,

Fig. 8 is a diagram illustrating the twisting.

The frame at having spool-brackets b; the spool-driven wheel a; and the transverse rail d are or may be all the same as in any doubling machine of well-known type At 6 and f are shown a faller and a rod, also common to any well-known doubling machine, which here serve by way of illustra tion as a means for exerting a certain amount of tension on the threads or strands A as they are being drawn lengthwise by and as an incident to winding them on the spool or bobbin B; it will be understood that there are two or more of such threads, though they are indicated by a single line in Figs. 1, 2 and 3 of the drawing. 7

On a bar 9 of the frame a bracket 71. is suitably clamped. In this bracket is pivoted an arm or lever 71 which is normally pressed inward by a spring j connecting the arm with the bracket. The arm has a pigtail or other eyelet is through which both or all of the threads A extend. Below the eyelet lc there is journaled in the arm. the twister Z, its axis of rotation being upright and more or less coincident with the guiding point of said eyelet. Referring to Figs. 4 to 7 the arm 2' terminates in an annular plate a" and a fork i projecting horizontally and the former above and spaced from the latter, plate 2" having an upwardly projecting bushing 01 flange i and a split i and its margin forming an abutment i at one side of such split. The twister is shown as a disk having a slit or slits m (in the pres ent case, two) arranged near the center thereof and parallel for reasons to be stated, each slit having a widened entry m extending to the periphery of the disk; the disk further has a depending flange or bushing m The disk is held between plate 2" and fork 2' rotating on anti-friction balls arranged in the race formed by flange i and m The disk is rotated by contact of its periphery with a bar 0 suitably supported and arranged to reciprocate parallel with the traverse rail; the means for reciprocating this bar and the traverse rail are not shown herein, any means for the purpose being suitable, for instance. that-shown in the aforesaid Patent No. 1,206.556.

Before starting the doubling operation the attendant enters the threads or strands into the twister, having drawn back the arm 2' sufiiciently to afford the desired clearance between the twister and bar 0. The entering is effected by engaging the threads in one of the entries m and then turning the disk Z till the threads are stopped by abutment i and thus register with split if, whereupon the threads may be introduced to the slit m; each slit is by preference adapted to hold the threads A side by side (see Fig. 8). The spool B and bar 0, together with the traverse rail, being now in motion, as the threads A are advanced and wound on the spool, being meanwhile held under tension by the means e'f, they are caused by the twister, which is made to rotate back and forth on account of frictional contact with the reciprocating bar 0, to swing around the axis of the twister, first in one direction and then in the other; the result is that alternating right and left wraps or twists are effected .in the threads or strands around each other, the same being incorporated in the doubled product which becomes wound on the spool. This is because, being held above and below the twister against twisting and arranged side by side as shown in the diagram, Fig. 8, in contact with the bearing surface formed by the relatively inner side of the slit and extending substantially coincident with a chord of a circle drawn. around the axis of the twister, each of the threads 2, 3 and -:t is carried around the thread 1. (Compare the full line and dotted line positions of the threads in this figure). Some other form of guiding opening than that described will suffice, but I prefer not to employ a round opening or eye because it allows the threads to slip around its periphery, which of course would detract from the twisting, if not wholly prevent it. Preferably the two or more strands being operated upon are entered into the same guiding opening on of the twister, rather than each in its own eye, for otherwise in view of the fact that the strands are being advanced while the twisting is going on the threads would abrade and might out each other where they become twisted or wrapped around each other below the twister; several guiding openings m are provided simply to expedite the engagement of the threads or strands with the twister.

In the construction herein actually shown and described the slits m are arranged as near as possible to the center of the twister in order to reduce to the minimum the incidental bending thereof out of a straight line; to accomplish this and prevent weakening the disk unduly they are made to approximately parallel each other.

Having thus fully described my invention, what I claim as new and desire to secure by Letters Patent is:

1. In combination, with means to draw I the strands longitudinally and means, spaced.

from the first means, to hold the strands under tension while being advanced, a. rotary twister arranged between the said means, means to supportthe twister and means to rotate the twister back and forth, said twister having means, disposed eccentric of its axis of rotation, to receive the taut advancing strands and confine them to a definite relation to each other and the axis of rotation of the twister during a revolution of the latter.

2. In combination, with means to draw the strands longitudinally and means, spaced from the first means, to hold the strands un der tension while being advanced, a rotary twister arranged between the said means, means to support the twister and means'to rotate the twister back and forth, said twister having a bearing surface for the taut advancing strands extending substantially coincident with a chord of a circle having the twisters axis of rotation as its center.

3. In combination, with meansto draw the strands longitudinally and means, spaced from. the first means, to hold the strands under tension while being advanced, a rotary twister arranged between the saidmeans, means to support the twisterand means to rotate the twister back and forth, said twister having a slit affording at one side a bearing surface for the taut advancing strands and extending substantially coincident with a chord of acirele having the twisters axis of rotation as its center.

4. In combination, with means to draw the strands longitudinally and means, spaced from the first means, to hold the strandsunder tension while being advanced, a rotary twister arranged between the said means, means to support the twister andmeans to rotate. the twister back and forth, said twister having a slit. affording at one side a bearing surface for the taut advancing strands and extending substantially coincident with a chord of a circle having the twisters axis of rotation as its center-and an entry extending angularly from'the slit to the periphery of the twister.

5. In a device for t-wisting'strands while being drawn lengthwise, awback and forth rotary twister having-an exposed periphery, and a strand-receiving opening extending to its periphery, in combination with asupporting member affording an axial bearing for the twister and formed with an axial opening and with a slit leading from said opening to the periphery of said member, said member having its periphery at one side of said slit convex and at the other side projecting and forming a strand-abutment 6. In combination, with means to draw the strands lengthwise, and means, spaced from the first means, to hold the strands under tension while being advanced, a back and forth rotary twister arranged between the said means and having means to receive the advancing strands, a springpressed holding device for the twister in which said twister is journaled, and a moving actuating part against which the twister is peripherally held by said holding device.

In testimony whereof I affix my signature.

EMORY J. LIPPS.

(Eopies of this patent may be obtained for five cents each, by addressing the "@ommieeioner ofi Patente,

Washington, 10. (2. 

